近年来，随着个人通讯和移动通讯技术的迅速发展，在天线的设计上提出了小型化和宽频带的要求。而微带天线具有结构紧凑、外观优美、体积小重量轻等优点，得到广泛的应用。但是，低增益、窄带宽的缺陷也限制了微带天线的使用。因此本文除了对微带天线做了基本介绍外，还对设计出具高增益、低副瓣、窄波束、体积小的Ka波段微带天线阵列进行了初步探讨。
关键词 微带天线 Ka波段 高增益 低副瓣 天线阵列
Design of Ka Band microstrip Antenna Array
Abstract
In recent years, with the rapid development of personal communication and mobile communication technology, the requirements of miniaturization and broadband are put forward in antenna design. The microstrip antenna has been widely used because of its compact structure, beautiful appearance, small size and light weight. However, the shortcomings of low gain and narrow bandwidth also limit the use of microstrip antennas. Therefore, in addition to the basic introduction of microstrip antenna, the design of Ka band microstrip antenna array with high gain, low sidelobe, narrow beam and small size is discussed in this paper.
Keywords Microstrip Antenna Ka band high gain Low sidelobe Antenna Array
1 绪论
1.1 引言
微带天线以其重量轻、体积小、剖面低、易生产及易与电路集成等诸多优点,在卫星通讯、雷达、导弹遥测等领域得以广泛应用.目前,Ka波段微带阵列天线已被广泛应用在各种雷达系统中.随着全球通信业务的迅速发展,移动通信系统更加需要小型化、宽频带、多功能(多频段、多极化)、高性能的天线.一款高增益、低副瓣、窄波束、体积小的天线不仅可以增加通信距离,提高收发前端信噪比,而且小型化结构也有利于前端电路集成.
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